Abstract/Summary

Recent trawling in the Southern Ocean has yielded an unusual and relatively large collection of deep-sea octopods,
comprising four species in two genera. Several deep-sea genera, which are inadequately characterised, have been
reported previously from the Southern Ocean. Within this paper, all the relevant historical type material has been
examined and a full revision has been undertaken. Species previously considered to be representative of the genus
Bentheledone have either been moved to Thaumeledone or are considered nomen dubium. A revised diagnosis of
Thaumeledone is provided together with redescriptions of its Southern Ocean species as well as a description of a new
species. A new genus has been erected to accommodate the remainder of the new specimens.